(2x+y)²-4(2x+y)+4根号x-2y-6=0,则(x÷y)的2009次方的值为
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![(2x+y)²-4(2x+y)+4根号x-2y-6=0,则(x÷y)的2009次方的值为](/uploads/image/z/371187-27-7.jpg?t=%282x%2By%29%26%23178%3B-4%282x%2By%29%2B4%E6%A0%B9%E5%8F%B7x-2y-6%3D0%2C%E5%88%99%28x%C3%B7y%29%E7%9A%842009%E6%AC%A1%E6%96%B9%E7%9A%84%E5%80%BC%E4%B8%BA)
(2x+y)²-4(2x+y)+4根号x-2y-6=0,则(x÷y)的2009次方的值为
(2x+y)²-4(2x+y)+4根号x-2y-6=0,则(x÷y)的2009次方的值为
(2x+y)²-4(2x+y)+4根号x-2y-6=0,则(x÷y)的2009次方的值为
(2x+y)²-4(2x+y)+4+√(x-2y-6)=0
(2x+y-2)²+√(x-2y-6)=0
2x+y-2=0
x-2y-6=0
解方程组
x=2,y=-2
(x÷y)的2009次方
=-1的2009次方
=-1
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